The Design Of Verification Equipment For Electrical Energy Meters

Electrical energy meter is one of the most important metrology equipments. It is also a kind of metrology apparatus for commercial exchange. Its credibility is important to consumers and corporations of electrical power especially after the legislation of "one meter for each family". It is related to one's immediate and vital interests of average masses directly. Therefore, the verification of electrical energy meters becomes more and more important. Otherwise, the rate of electrical energy meters has been low for many reasons. But slow development of verification equipment is one of the most important reasons. In this design, we will find a new and high efficient way for the manufacture of the verification equipment in kind of separating, which will make the manufacture to be easier and more flexible. The verification equipments will also be cheaper. All of these will do a good job for the improvement of unit pass and trace to the source. This is also helpful for building harmonious society.There are quite a few corporations which can produce the verification equipments for electrical energy meters in our country, especially for high exact grade equipments, most of which we bought from several companies, for example, Sida of Henan province, and abroad. The critical units of the equipment, for example, the standard electrical energy meter and the electrical source, are usually produced by themselves, who almost monopolized the market. This makes the price high. Accompany with the national legislation of building the harmonious society was put into practice, the energy problem, especially the electrical energy problem is becoming more and more important. More verification equipments for electrical energy meters are needed in present market.The task of this design is to find a new method, which doesn't depend on one special product, for the design of metrology apparatus for electrical energy meters. In this design, the whole system is separated into three units according to their separate functions: electric source, the standard electrical energy meter and the control system. Therefore, every unit will work separately and don't affect each other anymore. The system will be stronger and steadier.This design acts according to the above mentality. The overall task of system design is divided into three parts: standard electrical energy meter, the standard power source as well as the control system according to the structure. Three relatively independent parts develop the design alone, reduce influences among them as far as possible, and enhance system's stability and antijamming ability.The successful design of the system, especially the wonderful control system, makes the whole system no longer depend on certain corporations. The products of different companies will mix in well in the same system. The man-machine conversation works smoothly, system communication also does a good job. As the result, the system overall accurate degree grade reaches grade-0.1.